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• What's the problem with Scala's XML literals?

  - by Oak

  In this post, Martin (the language's head honcho) writes: [XML literals] Seemed a great idea at the time, now it sticks out like a sore thumb. I believe with the new string interpolation scheme we will be able to put all of XML processing in the libraries, which should be a big win. Being interested in language design myself, I'm wondering: Why does he write that it was a mistake to incorporate XML literals into the language? What is the controversy regarding this feature?

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• Punch Line Marketing

  - by jackman

  There are so many "punch line" websites like: http://www.thatswhyyoufail.com www.canrailsscale.com/ www.nooooooooooooooo.com/ but it's a mystery how they ever get so popular. I have an idea for a punch line website too, but I want to make it BIG! Does anyone have any tips for marketing these kinds of sites? p.s. and no, I do not own any of these sites, and am not disguising it as a question to market them lol.

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• OpenWorld in Small Bites

  - by Kathryn Perry

  Fifty thousand attendees -- that's bigger than the cities some of us live in. Monday morning it took 20 minutes to get from Hall D in Moscone North to a conference room in Moscone South -- the crowds were crushing! A great start to a great week! Larry is as big a name as ever on the program schedule and on the Moscone stage. People were packed in Hall D and clustered around every big screen TV. He stayed on script as he laid out Oracle's SaaS, PaaS, and IaaS strategies. Every seat in Chris Leone's Fusion Apps Cloud Overview was filled on Monday morning. Oracle employees who wanted to get in were turned away. And the same thing happened in the repeat session on Wednesday. Our newest suite of apps is hot! Speaking of hot, the weather was made to order. Then it turned very San Francisco-like on Wednesday afternoon. Downright cold for those who trusted SF temps to hold in the 80's. Who did you follow on Twitter during the conference? So many voices, opinions, and convos! Great combo of social media and sharp minds. Be sure to follow @larryellison, @stevenrmiranda, and @Oracle for updates and MyPOVs. Keywords for the Apps customers at the conference were cloud, mobile, and social. Every day, every session, every speaker. Wednesday afternoon, 4 pm at the Four Seasons hotel. A large roomful of analysts and influencers firing questions at a panel of eight Fusion customers. Steve Miranda moderating. Good energy and a great exchange of information and confidence. Word on the street is that OpenWorld has outgrown San Francisco -- but moving it seems unthinkable. The city isn't just a backdrop for an industry conference - it's a headliner right up there with Larry Ellison and Pearl Jam. As you can imagine, electrical outlets were in high demand at every venue. The most popular hotels and bars near Moscone designed their interiors around accessible electrical power strips. People are plenty willing to buy a drink while they grab a charge. Wednesday afternoon, 4 pm at the Four Seasons hotel. A large roomful of analysts and influencers firing questions at a panel of eight Fusion customers. Steve Miranda moderating. Good energy and a great exchange of information and confidence. Treasure Island in the dark. Eddy Vedder has an amazing voice! And Kings of Leon over delivered on people's expectations. It was cold. It was windy. It was very fun. One analyst said it's the best customer appreciation party in the industry. 

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• How to switch your small or home office to Linux

  <b>Tech Radar:</b> "With Linux and free software making a name for itself in the world of big business, many people are testing the feasibility of switching small and home office software to their open source equivalents."

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• VS2010 Launch Presentations

  Last week I was in Vegas to present at the DevConnections / VS2010 Launch event.  The show was well-attended and everybody I spoke to agreed it was educational and enjoyable.  My three talks were all on Wednesday, 14 April 2010, including one at 8am for which I was impressed to see a large turnout in attendance.   Pragmatic ASP.NET Tips, Tricks, and Tools My first session was on tips, tricks, and tools for ASP.NET developers.  This is a talk Ive given in past years, but which I refine every time.  I usually like to have a full session to devote to tools, and a separate talk just for Tips and Tricks, but for this show I was only given the one 75-minute slot, so I had to cut some materials to make things fit.  The talk went well, all the demos work, and the attendees seemed to enjoy it, and I like giving it, so hopefully I can continue to present on this topic in future DevConnections shows. Download the ASP.NET Tips, Tricks, and Tools slides and demos.   Whats New in ASP.NET MVC 2 My second talk of the day followed immediately after the Tips and Tricks talk, and was a brand new talk for me.  I have to throw out a thank-you to Phil for letting me see his MIX slide deck before he gave his talk, as that was a big help.  The official whats new document online is also worth checking out if youre interested in this subject.  Download the Whats New in ASP.NET MVC 2 slides and demos.   SOLIDify Your ASP.NET MVC 2 Application Just because youre using a ASP.NET MVC doesnt mean your code cant still end up being a big ball of mud.  This session describes a number of principles of software design that can help ensure applications remain loosely-coupled and malleable even as they age and increase in features and complexity.  This was my last talk of the day and did have one minor demo failure involving a database constraint.  Ive given this talk many times before, and in this case I had to fit it into a 60-minute timeslot, so Im not sure I had quite enough time to drive home all of the concepts to everyone in the audience.  That said, I did hear a number of positive comments on how the talk went, so thats encouraging. Download the SOLIDify Your ASP.NET MVC 2 Application slides and demos.   In my sessions, I promised to have these posted by the end of the weekend theyre going up at 10pm Sunday night (my time) 2 hours to spare!  Enjoy! Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• How representative is Ohloh?

  - by gerrit

  My colleague recently pointed me to Ohloh, a website providing statistics on FOSS based on versioning repositories. It's quite a fun procrastination tool, e.g. to compare programming languages by active projects: Which makes me wonder: how representative is such a comparison? Can we draw conclusions from this such as "Javascript is the most used programming language in FOSS, followed closely by Python, Java and C++"? Or are there some big caveats to take into account?

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• Strike Up Your Brand with Word-of-Mouth Marketing

  There&#146;s nothing better for your business than a brand advocate, a loyal customer who spreads the word about your products or services. Developing brand advocates can give a big boost to your bottom line.

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• On Teaching Open Source Development

  <b>IT World:</b> "One of the constants in my interactions with the Linux and open source communities is that they--all of them--are out there, in the big wide world, while I remain ensconced in my fortress of solitude here in Northern Indiana."

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• Achieving decoupling in Model classes

  - by Guven

  I am trying to test-drive (or at least write unit tests) my Model classes but I noticed that my classes end up being too coupled. Since I can't break this coupling, writing unit tests is becoming harder and harder. To be more specific: Model Classes: These are the classes that hold the data in my application. They resemble pretty much the POJO (plain old Java objects), but they also have some methods. The application is not too big so I have around 15 model classes. Coupling: Just to give an example, think of a simple case of Order Header - Order Item. The header knows the item and the item knows the header (needs some information from the header for performing certain operations). Then, let's say there is the relationship between Order Item - Item Report. The item report needs the item as well. At this point, imagine writing tests for Item Report; you need have a Order Header to carry out the tests. This is a simple case with 3 classes; things get more complicated with more classes. I can come up with decoupled classes when I design algorithms, persistence layers, UI interactions, etc... but with model classes, I can't think of a way to separate them. They currently sit as one big chunk of classes that depend on each other. Here are some workarounds that I can think of: Data Generators: I have a package that generates sample data for my model classes. For example, the OrderHeaderGenerator class creates OrderHeaders with some basic data in it. I use the OrderHeaderGenerator from my ItemReport unit-tests so that I get an instance to OrderHeader class. The problem is these generators get complicated pretty fast and then I also need to test these generators; defeating the purpose a little bit. Interfaces instead of dependencies: I can come up with interfaces to get rid of the hard dependencies. For example, the OrderItem class would depend on the IOrderHeader interface. So, in my unit tests, I can easily mock the behaviour of an OrderHeader with a FakeOrderHeader class that implements the IOrderHeader interface. The problem with this approach is the complexity that the Model classes would end up having. Would you have other ideas on how to break this coupling in the model classes? Or, how to make it easier to unit-test the model classes?

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• Basic SEO Mistakes

  Search engine optimization mistakes are quite common, and they are made by both seasoned SEO experts, and those who are new to it alike. Search engine optimization is a precise practice, thus there is no such thing as a tiny SEO mistake. The reason for this is that all SEO mistakes, big or small, all produce repercussions, which could affect the ranking if your website in one way or another.

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• Blending transition in cocos2d

  - by fiddler

  In my cocos2d-iphone game, I have 2 backgrounds (CCnodes), each containing a quite complex hierarchy of sprites. I would like to make a smooth transition between them: initially, only the first background is visible at the end, only the second one is visible Is there a good way to set the opacity of a full hierarchy of sprites ? I tried to recursively set the opacity of all the contained sprites. It kinda works except that: i guess it's not very efficient i would like the opacity of overlapping sprites to be 'merged' (as if the background was one single big sprite)

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• GUI for DirectX

  - by DeadMG

  I'm looking for a GUI library built on top of DirectX- preferably 9, but I can also do 11. I've looked at stuff like DXUT, but it's way too much for me- I'm only needing some UI controls which I would rather not write (and debug) myself, and their need to keep a C-compatible API is definitely a big downside. I'd rather look at UI libs that are designed to be integrated into an existing DirectX-based system, rather than forming the basis of a system. Any recommendations?

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• Best method to do A B testing across to subdomains

  - by Lior

  I want to do an A B test of an entire site for a new design and UX with only slight changes in content (a big brand site that has good Google rankings for many generic keywords. My idea of implementation is doing a 302 redirect to the new version (placing it on www1 subdomain) and allowing only user agents of known browsers to pass. The test version will have disallow all in the robots text. Will Google treat this favorably or do I have to use Google Website Optimizer (which will give me tracking headaches)?

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• Google Using Site Speed in Web Site Search Ranking

  Recently Google added a new signal to their search ranking algorithms. They are now utilizing site speed in web site search rankings. Site speed indicates how quickly a website responds to user requests, and Google is big on speed.

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• I want to learn the basics of Game Development [on hold]

  - by Mary

  I have programming experience and I would like to know how to start building games. I'm interested in building games for desktops and Android tablets. Could you list the general steps of Game Building? From the more common programming languages used to the software and frameworks available at each stage? I'm just trying to get the big picture of all the different options and tools I have at my disposal. Please leave some book recommendations and useful links!

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• System X Marks the Spot

  Server Snapshot: IBM's innovation isn't limited to its POWER-based servers. A host of new System x and BladeCenter offerings are poised to bring Big Blue to the top volume spot.

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• System X Marks the Spot

  Server Snapshot: IBM's innovation isn't limited to its POWER-based servers. A host of new System x and BladeCenter offerings are poised to bring Big Blue to the top volume spot.

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• Recession? What Recession? Red Hat Continues to Grow

  <b>Linux Planet:</b> "Linux vendor Red Hat will report its fiscal 2010 numbers today. Virtualization, cloud services, middleware, a big win on the Tokyo Stock Exchange-- is Red Hat's future as rosy as it appears?"

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• Why some video posts from the same blog appear in google with thumbs, while others do not?

  - by jayarjo

  We own media blog - which is basically a big collection of various videos streamed through our branded player. Interesting thing is that some of our posts show up in google search results with a thumb denoting that the post in question is in fact a video. But more often they are not. We basically wonder why? What does affect it and can we control it somehow? All posts (their single pages) have facebook og meta tags in place.

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• Skype Sticks a Thumb in their User's Eye

  <b>Jamie's Random Musings:</b> "...Skype-to-Skype calls will "always be free". Well, it turns out that promise is worth exactly as much as any other promise Skype has ever made, or will ever make for that matter. A big, fat nothing."

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• Offshore Outsourcing Company in India

  Offshore outsourcing services in India are today looked upon as a value enhancer that helps organizations to prune their operations at a low cost vantage. Big companies outsource their software appli... [Author: John Anthony - Web Design and Development - June 17, 2010]

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• Architects, Leadership, and Influence

  - by Bob Rhubart

  Technical expertise is a given for architects. In addition to solid development experience, extensive knowledge of technical trends, tools, standards, and methodolgies (not to mention business accumen) provides the foundation for the decisions the architect must make in the effort to get all the pieces to work together. But even superior technical chops can't overcome a lack of leadership. Leadership is about influence: the ability to effectively communicate — to sell your ideas and defend your decisions in a manner that affects the decisions of the people around you. Leadership and influence are especially important in situations in which the architect may not have the authority to simply tell people what to do. And even when the architect has that kind of authority, influential leadership can mean the difference between gaining real buy-in and support from colleagues and stakeholders, and settling for their grudging acceptance (or worse). Guess which outcome is likely to produce the best results. In a previous post I presented some examples of the kind of criticism that is leveled at architects, a great deal of which can be attributed to a lack of leadership and influence on the part of the targets of that criticism. So it was serendipitous that I recently ran across a post on the Harvard Business Review blog written by Chris Musselwhite and Tammie Plouffe. That post, When Your Influence Is Ineffective, includes this: [I]nfluence becomes ineffective when individuals become so focused on the desired outcome that they fail to fully consider the situation. While the influencer may still gain the short-term desired outcome, he or she can do long-term damage to personal effectiveness and the organization, as it creates an atmosphere of distrust where people stop listening, and the potential for innovation or progress is diminished. The need to "see the big picture" is a grossly reductive assesement of the architect's responsibilities — but that doesn't mean it's not true. That big picture perspective must encompass both the technological elements of the architecture and the elements responsible for implementing those technologies in compliance with the prescribed architecture. Technologies may be tempermental, but they don't have personalities or egos, and they are unlikely to carry a grudge — not yet, anyway (Hello, Skynet!).  Effective leadership and the ability to influence people can help to ensure that all the pieces fit and that they work together, today and tomorrow.

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• Oracle Advanced Compression Webcast Replay Available

  - by [email protected]

  Did you miss our webcast "Save BIG on Storage - with Oracle Database 11g and Advanced Compression"? Don't worry, you can still register and view the recording including the full Q&A session with Tim Shetler and Bill Hodak. Click here to learn how Oracle Advanced Compression can reduce your disk space requirements for all types of data, improve query and storage performance and lower storage costs throughout the datacenter.

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• Where can I learn about every OOP concept?

  - by Mel

  I'm looking for some material that can explain all the concepts related to OOP that doesn't deviate too much from the point. I want something short and understandable for a beginner. I know some of these can be found on wikipedia, but wikipedia is full of minor and sometimes big mistakes and I don't think that is the best choice for learning something. Where should I start ? Also, please don't recommend books of 1000 pages or such.

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• Webscale is all about sharding and its coming to SQL Azure

  - by simonsabin

  There are many that joke about developers always talking about webscale and needing to shard to be able to scale. In reality many systems, if not most, don’t need to be able to scale to numerous nodes because todays processing is so powerful. However in the cloud world where you don’t have 1 big box you have many little ones (instances) you need some way of sharding/federating/distributing data and load. I’ve mentioned before of a PDC presentation on whats coming in SQL Azure, well they’ve put some...(read more)

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